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Analog Devices LT8306 | Demoboard AD-PS3803-RD
PoE+ with Ideal Diode Bridge to Isolated Flyback DC/DC (12V, 2A)
Overview
| Topology | LAN / POE |
| Input voltage | 37-57 V |
| Output 1 | 12 V / 2 A |
| IC revision | 1 |
Description
The AD-PS3803-RD reference design is a power converter capable of harnessing any IEEE802.3at (PoE+, Type 2) compliant downstream Power-Over-Ethernet (PoE) supply to provide a galvanically isolated DC power.At the core of this solution is the LT8306 60V No-Opto Flyback controller, stepping down the 37V to 57V PoE input voltage to a 12V, 24W DC output.The on-board LT4275 LTPoE++/PoE+/PoE power delivery (PD) controller handles interfacing and power delivery to any PoE supply.
Features
- Galvanically isolated 12V flyback DC output with up to 24 W of output power capability
- No Transformer third winding or Opto-Isolator for output regulation
- Supports IEEE802.3at (PoE+, Type 2) and IEEE802.3bt (PoE++, Type 3 and 4) interfacing and power supply control via a configurable jumper array
- Supports a wide input DC auxiliary power of 37V to 57V
Typical applications
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Version | VIN | VOut1 (V) | IOut1 (A) | L (µH) | n | VT (V) | Size | Vaux (V) | RDC 1 (Ω) | RDC 2 (Ω) | RDC 3 (Ω) | Mount | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012207115 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 100 V(DC) | 680 pF | ±10% | 100 | 2.5 | 10 GΩ | X7R Class II | 2 | 1.25 | 0.8 | 0.5 | 7" Tape & Reel | – | – | – | – | – | – | – | 0805 | – | – | – | – | – | – | – | – | – | -55 °C up to +125 °C | ||
 | 750316116 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PoE+ Power over Ethernet Plus Transformer | – | – | – | – | – | – | 23.11 | 29.65 | 11.43 | – | Tape and Reel | Flyback | 41 - 57 V (DC) | 12 | 4 | 18 | 2:1:1 | 1500 | EFD20 | 12 | 0.02 | 0.011 | 0.066 | SMT | – | – | – | – | -40 °C up to +125 °C | ||
 | 7490220122 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LAN LAN Transformer | – | – | – | – | – | – | 17.55 | 16 | 98.8 | 13.97 | – | SMT | – | – | – | 350 | 1:1 | 1500 | – | – | – | – | – | SMT | 10/100/1000BASE-T | 1 | 4PPoE (up to 1000 mA) | No | -40 °C up to +105 °C |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012207115 | SPEC | |
| 750316116 | SPEC | |
| 7490220122 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Version | VIN | VOut1 (V) | IOut1 (A) | L (µH) | n | VT (V) | Size | Vaux (V) | RDC 1 (Ω) | RDC 2 (Ω) | RDC 3 (Ω) | Mount | Data rate | Ports | PoE | Improved CMRR | Operating Temperature | Samples |
|---|